Answer :
Using the slope concept, it is found that the approximate angle of elevation from the end of the shadow to the top of the tree with respect to the ground is of 35.75º.
What is a slope?
The slope is given by the vertical change divided by the horizontal change.
It's also the tangent of the angle of depression.
In this problem, the vertical change is the height of the tree, of 18 feet, while the shadow of 25 feet is the horizontal change, hence:
[tex]\tan^{\theta} = \frac{18}{25}[/tex]
[tex]\theta = \tan^{-1}{\frac{18}{25}}[/tex]
[tex]\theta = 35.75[/tex]
The approximate angle of elevation from the end of the shadow to the top of the tree with respect to the ground is of 35.75º.
You can learn more about the slope concept at https://brainly.com/question/22568180